Twister tube for spinning frames



' July 8, 1930. H A OWEN 1,770,085

TWISTER TUBE FOR SPINNING FRAMES Eiled Jan. 8, 1930 2 Sheets-Sheet 1 Fig1.

4 Pp-:1; 28 30 H5 3| a5 9 fi as if 27 u ase' n '2: e if'fi 5' 5InvenTor. I Henry A. Gwen AT Tys.

H. A. OWEN Jul 8, 1930.

TWISTER TUBE FOR SPINNING FRAMES 2 Sheets-Sheet 2 Filed Jan. 8, 1

, InvenTor. Henry A. Gwen.

b fwwkw ATTys.

Patented July 8, 1930 UNE'BTED stares earner orrics HENRY A. ownlv, orFOXBORO, MASSACHUSETTS, Assienoa TO DAVIS & FURBER MA- CHINE COMPANY, orNORTH Annovna, Massaonusnrrs, A CORPORATION OF MAs- SACI-IUSETTSTWISTER- TUBE FOR SPINNING FRAMES Application filed January 8, 1930.Serial No. 419,428.

This invention relates to spinning frames of the type in which a falsetwist is lnduced in the roving during the drawing operation, andparticularly to improvements in the means employed to induce such twist,and has for its general object to provide a twister tube constructed ina manner to increase its operating etficiency- Y A specific object ofthe invention is to provide a twister-tube which rotates in completelyclosed cylindrical bearings.

A further specific object of theinvention is to provide a tube which canbe readily re moved or replaced Without disturbing or stretching thedriving belt thereon.

Afurther object of the invention is to provide a twister tube having atotally enclosed lubricating system incorporating an eflicient method offeeding lubricant directly to the journals on the tube. 7 A furtherobject of the invention is to provide a safety device which limits thedownward movement of the tube when making adjustments thereon.

These and-other objects and features will more fully appear from thefollowing specification in connection with the accompanying drawings,and will be particularly pointed out in the claims.

In the drawings: v

Fig. 1 is a cross sectional'view through a portion of a spinning frameembodyinga preferred form of the invention.

Fig. 2 is a plan view of a portion of the i spinning frame illustratingthe manner in which the twister tube is supported thereon.

Fig. 3 is a cross section on line 33 Fig. 1.

Fig. 4 is a sectional view on line M Fig. 3.

It is a well known fact that the spinning frame of the usual type failsto produce ahigh quality even run of yarn when spinning certainmaterials such, for instance, as woolen yarns. The introduction of afalse twist into the roving while it is being drawn has been foundgreatly to increase the quality of the yarn. In order to maintain auniform high quality in the product, the means used to produce the falsetwist must function uniformly. It is the purpose of the presentinvention to produce a twister tube which will function uniformly andwith a minimum,

of attention.

To illustrate the construction and function of the tube, a portion onlyof a spinning frame including the elements associated with the twistertube is illustrated. The adaptation of the improvements included in thepresent invention to the elements not shown will be readily understoodby those skilled in the art. A pairof feed rolls 1 and 2 de-, liver theroving 3 from a suitable source of supply, not shown, to the twistertube through which it is threaded and delivered therefrom to the bite ofthe draft rolls'5 and 6. The speed of the roll 5 with relation to the,

feed rolls 1 and 2 isvaried to produce the required draft in the roving.Upon passing between the draft rolls the roving is given its final twistby means of a ring spinning mechanism,-not shown. The roll 6 is held inyielding engagement with the roll 5 by means of the stirrup 7 actuatedby the weight 8.

The twister tube itself must be provided with suitable means forengaging the roving and imparting a false twist thereto. Any

suitable means for this purpose may be employed. The means illustratedand described herein is shown as of the type illustrated in the U. S.patentto' Pease No. 983,641.

The general construction. of the tube in;

volves certain novel features. The complete tube assembly designated by4is supported in a specially constructed bracket 9 secured to a rail 90mounted in the main frame, 10. The

tube 4; consists of a tubular body member'll,

rotatably mounted in the bracket 9 and having an axial bore 12 therein.A whorl 13 is detachably secured to the bore member 11 in any suitablemanner as by means of the set screw 14. The upper end of the member 11is provided with pins 15 which intermittently engage the roving as itpasses into the tube and assists in the uniform drawing thereof. AThelower end of the twister tube is provided with a detachable rovingengaging and twisting head 16 secured thereto in any suitable manner asby means of a set screw 17. The set screw is preferably pointed at itsinner endto be received by a properly positioned spot or recess on theend of the tube.

. ever, be employed to positively retain the head on the tube such forexample as aremovable, straight or taper pin in which casethe tube mustbe a-ppropriately re'cessed to retain the pin.- A desirable feature ofsuch construction is that if the set- -sc-rewor pin M shouldbecomeloosened during the running of the machine the head '16will not imme-.diately drop down but will be temporarily supported by the securingmeans thus ,provide an opportunity for detecting the loose Condition ofsuch retaining means which condition may 'be reme'diedbefore any damageoccurs. I 1 The head 16 isprovidedwitha pair of jaws 18' and l 9 whichhave clamping faces disposed 1 maxinalignment with the bore 12 of thetube and between whichthe roving passes to rei tively greatamount ofwear takes place at bite ofthedraft rollsb and G. 'One or both of thejaws l8 and19 are preferably yielding with relation to theotherl Asherein shown the jaw 18 *is pivoted totheihea d at 20, and has an upperweightedarm; 21. Since'a relathe clamping faces the j aws'are desirablydetachably'se'c'ured to the head to provide for replacement. 'Ihe jaw lsis securedto the head by meansof a screw 22. 'fThejaw 19' is secured toits upper weighted arm section 21 by means ofa screw 28. Asthetuberotates the weighted" is thrown outwardly by centrifugal force whichrocks the jaw 19 aboutits pivot point 20' to grip the roving as i itemerges from the tubular member 4.

If desireda guiding tube 2'4:may be secured .to the head l6'in a'Xialalignment with the borel2 to directthe roving into the plane of theclamping faces of the jaws. As a result of theiconstructio'n abovedescribed, the-rotatin'g parts of the twistertube assemblymay be readilyremovedwithoutidisturbmg anyof the associated parts of the mechanism.Byl'oosening the set screw 17 the head -16. may be removed from'the endof the V tubular member 4, The tubular member itself may now'be removedbyloosening the set screw 14 in the whorl and lifting endavise out ofthe bracket. It-will be noted that the abovefeature is accomplishedwithout moving the whorl laterallyfrom its running position thusavoiding stretching or dis? turbing'the driving belt 25. U H

is common practice to mount'a'twi'ste tube in bearings which arepartially open usually at the-front to permit'the' tube to be removedlaterally forward. This method was necessitated chiefly because of thestruccient and render proper lubrication thereof -ve ry difficult. tubeis supported in completely closed cylin- *drical bearings 26 and 27above and below the whorl 13 respectively;- Each of these bear- In' thepresent inyention the ings is provided with oil reservoirs 28 completelysurrounding the tube and preferably situated in a plane'intermediate ofthe plane of the'upperand lower faces of the bearings. Preferably thereservoirs are provlded with oil feedingwicks 29 which engage theperiph- ."Ea'jch reservoir is also providedwith a filling OrificeSOsituated a readily accessibleposition in front'of the twistertubes.

v j There is thus provided eflicient bearings'havceive its temporarytwist before entering the the;v bite of the rolls 5'and Smust beaccurately adjusted. Inthepresent construction this is accomplishe'd'byloosening the set screw 14 in the whorl 1-3 and moving the tubularmemberaxially until the proper adjustment is secured after which the set screwistightened. The weight ofthe tubular member with its clamping head isthus supported by the whorl, theflower face ofwhich'engages the upperY'face of'the bearing 27.

In order to prevent accidental engagement of the clamping jaws with'thedraft rolls.

means are provided to limit the extent to which the tube may descend inits bearings.

If the set screw 14c should become loosened while the machine is runningor if the operator is careless in adjusting the. tube a stop shoulder 31on'the tubular member is provided and sopositionedthat it will stop thedownward motion of the tube just before the jaws l8 and19 engage withthe rolls 5 and 6. Damage to themachine is thereby positively preventedpThe upper bearing'QS is slightly countersunk on its upper face to form asunkenbearingface upon which the stop shoulder 81 may rest. hen theproper height of' the. jaws above the rolls 5 and G-has been determined,there may be .a slight space between the shoulder and its co-operat'ingbearing 'face on the bearing 26. If such a space 'exists abovef thesurface of the-bearing there would be a tendency for foreign matter suchas fibres and lint to accumulate therein. Furthermore should therovingbecome accidentally wound in the space'the elements of the tube wouldhave to bedisassembled and cleared to again establish a free runningtube. By locating the bearing surface for the shoulder 31 below the faceof the bearing the difiiculties which arise due to the presence, adj acent the roving, of a shoulder bearing upon or near a co-operatingbearing face are elimi- 'nated.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is: a

1. A spinning frame comprising drawing rolls, a closed cylindricalbearing, a twister tube having a tubular body member through which theroving is threaded rotatably mounted in and axially removable upwardfrom said bearing, a whorl detachably secured to said body member, aframe detachably secured to the lower end of said body member to permitthe axial upward removal of said member and means on said frame toengage the roving as it emerges from the bottom of said body member andimpart a fake twist thereto adjacent the bite of the r0 s.

2. A spinning frame comprising drawing rolls, a closed cylindricalbearing, a twister tube having a tubular member through which the rovingis threaded rotatably mounted in and axially removable upward from saidbearing, a whorl slidable longitudinally of said body member, meansdetachably to secure said whorl thereto, a driving belt on said whorl, adetachable roving engaging and twisting head extending adjacent the biteof the rolls and secured to the end of said tubular member, whereby thevarious elements thereof may be removed or installed without disturbingor stretching said driving belt by detaching said roving,

engaging and twisting head, loosening the means securing the whorl tosaid body memher, and removing said body member axially fr 1 1m itsbearings upwardly away from said r0 s.

3. In a spinning frame, drawing rolls, a bracket mounted on the framehaving closed cylindrical bearings extending substantially perpendicularto the rolls, a twister tube having a tubular body member through whichthe roving is threaded rotatably mounted in and axially removable upwardaway from said rolls from said bearings and a detachable roving engagingand twisting head extending adjacent the bite of the rolls and securedto the lower end of said tubular body member, said roving engaging headbeing of a size incapable of passing through said cylindrical bearings.

4;. In a spinning frame, drawing rolls, a bracket mounted on the framehaving closed cylindrical bearings, disposed on an axis intersecting thebite of the rolls, a twister tube having a tubular body member throughwhich the roving is threaded rotatably mounted in and axially removablefrom said bearings upward and away from the rolls, a whorl between saidbearings detachably secured to said tubular body member and slidablelongitudinally thereon, a detachable head of a size incapable of passingthrough said bearings secured to the lower end of said tubular bodymember engaging and twisting the roving as it issues from said tubularmember and enclosed oil reservoirs in said bearings situatedintermediate the upper and lower faces thereof.

5. In a spinning frame, the elements defined in claim 4 together withextensions on each of said bearings projecting forwardly and havingfilling orifices therein communicating with the oil reservoirs.

6. In a spinning frame, the elements defined in claim 4 together withoil feeding wicks within the oil reservoirs engaging substantially thefull periphery of the tubular member;

7. In a spinning frame, drawing rolls, a bracket mounted on the framehaving closed upper and lower cylindrical bearings, disposed on an axisintersect-ing the bite of the rolls, a twister tube having a tubularbody member with a stop shoulder thereon rotatably mounted in andaxially removable from said bearings away from said rolls, a bearingface on said upper bearing to be engaged by said step shoulder acting tolimit the downward movement of said tubular member a whorl slidable onand detachably secured to said tubular member between said upper andlower bearings and a detachable roving engaging and twisting headsecured to the lower end of said tubular member and of a size incapableof passing through said bearings.

8. In a spinning frame, a bracket mounted on the frame having closedupper and lower cyiindrical bearings, a twister tube having a tubularbody member with a stop shoulder thereon rotatably mounted in andaxially removable from said bearings, a countersunk bearingface in saidupper bearing to be engaged by said stop shoulder to limit the downwardmovement of said tubular body member, a whorl slidable on and detachablysecured to said tubular member between said upper and lower bearings anda detachable roving engaging twisting head secured to the lower end ofsaid tubular member.

9. A spinning frame comprising drawing rolls, a closed cylindricalbearing, a twister tube having a tubular body member through which theroving is threaded rotatably mounted in and axially removable from saidbearing upward and away from said drawing rolls, a whorl detachablysecured to said body member of a size incapable of passing through saidbearings, a frame on the lower end of said body member, a recess in thelower end of said body member, means in the frame adapted to enter saidrecess and act positively to: retainthe frame on said body membeg andmeanson saidlframe to engage theroving as-it emerges from the bottom ofsaidnbody member and impart a false twist thereto; adjacent the bite ofthe rolls.

' In testimony whereof, I have signed my name to this specification.

HENRY AL OWEN.

